arm64: defconfig: Enable TI's J721E SoC platform

Enable J721E SoC support from TI.

Signed-off-by: Nishanth Menon <nm@ti.com>

arch/arm64/configs/defconfig

@@ -611,6 +611,7 @@ CONFIG_ARCH_TEGRA_210_SOC=y
 CONFIG_ARCH_TEGRA_186_SOC=y
 CONFIG_ARCH_TEGRA_194_SOC=y
 CONFIG_ARCH_K3_AM6_SOC=y
+CONFIG_ARCH_K3_J721E_SOC=y
 CONFIG_SOC_TI=y
 CONFIG_TI_SCI_PM_DOMAINS=y
 CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y